725981715 has 48 divisors (see below), whose sum is σ = 1316939520. Its totient is φ = 369515520.

The previous prime is 725981579. The next prime is 725981717. The reversal of 725981715 is 517189527.

It is not a de Polignac number, because 725981715 - 2¹⁵ = 725948947 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (725981717) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 98271 + ... + 105399.

It is an arithmetic number, because the mean of its divisors is an integer number (27436240).

Almost surely, 2^725981715 is an apocalyptic number.

725981715 is a deficient number, since it is larger than the sum of its proper divisors (590957805).

725981715 is a wasteful number, since it uses less digits than its factorization.

725981715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7244 (or 7241 counting only the distinct ones).

The product of its digits is 176400, while the sum is 45.

The square root of 725981715 is about 26944.0478584789. The cubic root of 725981715 is about 898.7561892379.

The spelling of 725981715 in words is "seven hundred twenty-five million, nine hundred eighty-one thousand, seven hundred fifteen".